<!--  -->
<template>
    <el-menu default-active="2" class="el-menu-vertical-demo"  background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"  :collapse="isCollapseMenu">
      <h3 v-show="!isCollapseMenu">小滴课堂后台管理系统</h3>
      <h3 v-show="isCollapseMenu">小滴</h3>
    <el-menu-item :index="item.path" v-for="item in noChildren" :key="item.path" @click="clickMenu(item)" >
      <i :class="'el-icon-'+item.icon"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>
      <el-submenu :index="item.label" v-for="(item,index) in hasChildren" :key="index" >
      <template slot="title">
       <i :class="'el-icon-'+item.icon"></i>
      <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group>
        <el-menu-item :index="subItem.label" v-for="(subItem,subIndex) in item.children" :key="subIndex" @click="clickMenu(subItem)" >
          <i :class="'el-icon-'+subItem.icon"></i>
      <span slot="title">{{subItem.label}}</span>
        </el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<script>
export default {
  computed:{
    noChildren(){
      return this.menu.filter(item=>!item.children)
    },
    hasChildren(){
      return this.menu.filter(item=>item.children)
    },
    isCollapseMenu(){
      return this.$store.state.tab.isCollapse
    },
    menu(){
      return this.$store.state.tab.menu
    }
  },
  data() {
    return {
      asideMenu:[
        {
          path:'/',
          name:'home',
          label:'首页',
          icon:'s-home'
        },
        {
          path:'/video',
          name:'video',
          label:'视频管理页面',
          icon:'video-play'
        },
        {
          path:'/user',
          name:'user',
          label:'用户管理页面',
          icon:'user'
        },
        {
          label:'其他',
          icon:'user',
          icon:'setting',
          children:[
            {
              path:'/page1',
              name:'page1',
              label:'页面1',
              icon:'setting'
            },
            {
              path:'/page2',
              name:'page2',
              label:'页面2',
              icon:'setting'
            }
          ]
        },
      ]
    }
  },
    methods:{
      clickMenu(item){
        this.$router.push({name:item.name})
        this.$store.commit('selectMenu',item)
      }
    }
}
</script>

<style lang="scss"  scoped>
 .el-menu{
   height: 100%;
   border:none;
   h3 {
     color: #fff;
     text-align: center;
     height: 18px;
   }
 }
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
  }
</style>
